Mill for manufacture of tubes, &amp;c.



8 SHEETS-SHEET 1.

PATENTED OCT. 29, 1907.

E. WINTER.

APPLICATION FILED APR. 2. 1906.

MILL FOR MANUFACTURE OF TUBES, 8w.

HJMZL vN mm No. 869,283. PATENTED OCT. 29. 1907.

' E. WINTER.

MILL FOR MANUFACTURE OF TUBES, 8:0. APPLIOATION FILED APR. 2. 1906.

3 SHEETS-SHEET 2.

WITNESSES:

PATENTED OCT. 29. 1907. THE.- FAOTURE 0P TUBES, &0.

D APR.-2. 1906.

s sums SHEET 3 B. WIN

M'ILL FOR MANU APPLIOATIO E MZL UNITED STATES- PATENT OFFICE.

-EMIL WINTER, OF RIT'ISBURG, PENNSYLVANIA.

MILL on MANUFACTURE or TUBES, 80c.

Application filed April 2,

To all whom it 'may concern:

Be it known that I, EMIL WINTER, residing at Pittsburg, in the county ofAllegheny and State of Pennsylyania, a citizen of the United States,have invented or discovered certain new and useful Improvements in Millsfor the Manufacture of Tubes, &c., of which improvements the followingis a specification.

In an application filed May 9th, 1905, Serial No. 259,501, I have shownand described certain improve ments in mills for swaging-steel, iron,copper and other billets to rods, bars or pipes, said improvementsconsisting generally stated in the employment of continuously rotatingrolls having one or'more dies or swaging portions, means controlled bythe swages for imparting. a back and forth' reciprocation to the billet,means for intermittingly feeding the billet forward between the rolls,and means for rotating the billet during reduction. 7 i

The invention described herein relates to further improvements in theclass or kind of mechanism above referred to.

The invention is hereinafter more fully described and claimed.

In the accompanying drawings forming a part of this specification Figure1 is a top plan view of my improved machine; Fig.2 is a sectionalelevation on a plane indicated by the line IIII Fig. 1; Fig. 3 is asectional plan view of the apparatus; Fig. 4shows in edge and sideelevation of the adjustable connection from the power shaft to theplunger of the feeding pump; Fig.5 is an elevation on an enlarged scaleof the swaging or reducing rolls; andFig. 6 is a sectional elevation ofthe same. In the practice of my invention,the rolls 1 are provided withone or more dies or swaging portions 2, which may be integral with therolls, but preferably are formed in blocks, 3, which are securedinrecesses formed in the peripheries of the rolls, asshown in Figs. 2, 5and 6. The swaging portions have tapering matrices arranged so that thenarrow portions will first bear on the billet in the normal operation ofthe machine during which the rolls rotate in the direction of feed ofthe billet.

ameter, to permit of the billet being drawn back after I each swagingoperation.

The billet to be reduced is secured to a holder, 4, carried by a rod, 5,to which feed and reciprocatory move-' ments are imparted, the forwardportion ofthe recipropiston rod as to be 'free to rotate therein but tomove Specification of Letters Patent.

Re I tween the swaging portions the rolls are reduced in di- Patentedoct. 29, 1907.

1906. SsrialNo. 309,415..

without affecting the piston or piston rod. The cylinder 7 is connectedat points adjacent to its ends, to a cylinder 9 by pipes 10, which willpermit of a movement of the cylinder 7, as hereinafter described. Thepiston 11 of the cylinder 9 is operated directly or indirectly by therolls 1 or some connection thereto, so that a complete reciprocationwill be imparted for each swaging action on the billet. In theconstruction shown there will be four swaging operations during eachrotation of the rolls, hence the piston ll of the cylinder 9. isreciprocated four times during each revolution of the rolls. Thecylinders 7 and 9 are charged with fluid at such a pressure that thepiston 6 will immediately respond to any movement of the piston 11.While any fluid may be employed, it is preferred that one having someelasticity, as air, should be used, and while the pressure by the piston6, as stated, a yielding under abnormal conditions should be providedfor. The connections 10 should besuch as to permit of the movement ofthe cylinder 7 with the carriage 12 on which said cylinder is mounted.This carriage isconnected to the rod 13,

I 15 secured thereto.

In theforging operation it is desirable that the carriage 12 should begiven first a comparativelyquick movement, after the billet has beensecured to its holder, to bring the latter into operative relation orfeed position relative to the swaging dies, second, a step by step feedmovement, and third, a quick uniform movement away from the dies tostrip the finished article from the holderand to move the latter to aposition to receive another billet. These movements are effected byfluid pressure mechanism of any suitable design, and as the describedmovements should preferably be positive and uniform, it is preferred toemploy an incompressible fluid as water. While any suitable construe.tion may be employed, that shown presents many advantageous features.The ends of the cylinder14 are connected by pipes 16 and 17 to afour-way valve mechanism 20, which is also connected to a high pressuresupply, line, 18, and to a reservoir 19. By shifting the valve 20 of thefour-way mechanism, either end of the cylinder, 14, can be connected tothe high pressure feed line 18 and the opposite endof the cylinder tothe exhaust reservoir 19 so that by properly shifting the valve 20 aquick uniform movement of the piston 15 and the by step feed-movement ofthe piston 15 and carriage 12, the cylinder is connected by a pipe, 21,to the outlet port of a pump mechanism which is controlled in itsoperation by or in accordance with the swaging dies, so that a feedmovement will occur when the billet is free from the grip of the dies.It is preferred for reasons hereinafter stated that the connection fromthe cylinl der 14 to the outlet port of the pump should be throughshould be sufficiently high to insure prompt response' passing throughthe'cylinder 14 and having the piston carriage 12 can be produced. Inorder to effect a step a two-way valve-mechanism, 22, which is alsoconnected by a pipe 23', leading to the high pressure supply line.

The plunger 24,0f the pump is connected to a crank pin 25adjustably'mounted-on a disk'26, which is driven through suitablegearing by the power shaft of the machine. By adjusting the crank pin25, the length of 'stroke of the plunger 24 can be changed in accordancewith the amount of feed desired. The inletport 27 of the pump isconnected by a pipe 28 to the reservoir 19. After the carriage has beenmoved towards the rolls to feed position by pressure from the line 18the valve 20 is shifted to cut off such pressure from the cylinder, 14,but the connection of the pipe 16 with the reservoir 19 is maintained.At the same time the valve 22 is shifted to connect the outlet port ofthe pump with the cylinder and to cut off connection between said portand. the high pressure line 18. With the valves 20 and 22 in thisposition, the pump will at each stroke force an amount of waterdependent on its length of stroke, into the cylinder, 14, the pumpdrawing water for this purpose from the reservoir 19. As the amount ofwater forced into the cylinder is dependent solely on the length ofstroke of the plunger 24, the feed of the billet will be the sameregardless of the rate of rotation of the rolls or the pump operatingmechanism After the billet has been reduced and it is desired to movethe carriage back, the valve 22 is shifted to cut off the connection ofthe pump to the cylinder 14, and to connect the former with the line 18,so that the operation of the rolls and pump need not be stopped. Whileit is .pre- *ferred that the pump should be kept in operation while therolls are operating, the pump, or its operating mechanism may bedetachably connected to the driving mechanism. After the valve 22 isshifted as stated, the stripper plate 29 is raised by the lever 30 toengage the completed article and the valve 2 0 is shifted to connect theline 18 with the forward end of the cylinder, 14, and the rear end ofthe latter with the reservoir 19.

In addition to the progressive or feed movement imparted to the billetit should be given a rotation around its axis, such rotary movementbeing preferablygiven between succeeding swaging operations, andpreferably amounting to about ninety degrees. To this end a fluidpressure cylinder, 3]., is mounted on the carriage in suitable relationto the rod 5 and the piston rod, 32, of said cylinder is provided with atoothed portion adapted to engage a'pinion, 33, loosely mounted on therod. A pawl, 34, is so pivotally mounted on the pinion as to engage aratchet wheel 35 secured to'the rod '5. By this construction a rotarymovement will be imparted to the rod and billet when the piston rod 32is shifted in one direction, but on the return movement of the latter,the pinion will rotate on the 'rod without imparting any movementthereto. The ratchet .wheel is so connected to the rod 5, as to permitthe rod to reciprocate back and forth through it,

' while it insures the rotation of the rod with it. The

rotation of the rod 5 and billet should be effected dur ing theirbackward movement or while the billet is free from the grip of theswaging portions of the rolls.

To this end the valve mechanism 36 controlling the fiow oi fluidpressure to and from the cylinder, 31 .is. adapted to be operated by thepiston rod 8'through the medium of an arm 37- secured to the piston and:operative-on the rearward movement of the piston rod to shift the valvein one direction and to reverse the valve when the piston rod movesforward.

In order to check the reciprocation of the billet holder, withoutstopping the rolls, suitable means are rolls and the cylinder 7. Aconvenient construction to that end consists in interposing a four-way.valve mechanism 38 in the connections 10 from cylinder 9 in cylinder 9will flow to and fro from one end of said cylinder through the valve tothe opposite end. When the valve is shifted the fiuid will flow to andfrom one cylinder to the other thereby reciprocating the billet holder.

I claim herein as my invention;

1. in a machine for swaging billets, etc., the combina- -tion Ofl'OllShaving one or more swaging portions, means for reciprocating the billet,fluid pressure means for feeding the billet comprising a cylinder andpiston, and synchronizing means fol-v forcing a predetermined volume offluid into the cylinder at intervals whereby said fluid pressure meansfeed the billet in timed relation to the rolls.

2. -In a machine for swaging billets, etc the combination of rollshaving one or more swaging portions, means for reciprocating the billet,fluid pressure means for feeding the billet, fluid pressure means forcontrolling the train for operating the fluid pressure means.

3. In a machine for swaging billets, etc., the combination of rollshaving one or more swaging portions and reduced intermediate portion orportions, means having a resilient member for reciprocating the billet,hydraulic pressure means for feeding the billet, means for controllingthe feed mechanism and a suitable connection from the roll train foroperating the controlling means.

4. In a machine for swaging billets, etc., the combination of swagingrolls, operating means therefor, a billet holder, means for effecting arelative reciprocation between the rolls and billet 'holder, a feedmechanism including a fluid pressure cylinder and piston, means forintermittently forcing predetermined quantities of fluid into thecylinder and means permitting the uninterrupted flow of fluid pressureinto the cylinder.

5. In a mill for swaging billets, etc., swaging rolls and operatingmeans therefor, a billet holder and means for permitting a relativereciprocation between'the rolls and billet holder, in combination withfeed mechanism for the billet comprising a cylinder and piston and meansin train with the roll operating means adapted to control the admissionof fluid pressure to the cylinder. 7

6. A mill for swaglng billets, swaglng rolls and operating meanstherefor, a billet holder and means for permitting a relativereciprocation between the rolls'a'nd billet holder in combination withfeed mechanism for the billet comprising a cylinder and piston, .a pumpconnected to the. cylinder, mechanism for operating the pump in suchcon- In testimony whereofll have hereunto set my hand.

EMIL WINTER.

'Wltnesses:

('IIARLES BARNETT, .L llmlssll'r Blalnu-lr.

employed for interrupting the connection between theto cylinder 7. Inone position of this valve the fluid.

feed mechanism and a suitable connection from the roll.

nection with theswaging rolls that-"the pump-will operate

